Aluminum oxide is a very hard mineral that maintains sharp points on the grains much longer than natural abrasives such as emery or garnet. The abrasive grains are adhered to the sandpaper with some space between them, known as open-coat construction, to minimize the buildup of dust on the surface of the paper, which would otherwise load the abrasive points. Loading often results from sanding soft materials and can clog the abrasive, shortening the usable life of the sandpaper sheet.
3M 02116, Paper Sheet 346U, 60 D-weight, 9 in x 11 in, 7000120221
$1.11
Factory Stock, 7-10 Day Leadtime
3M Paper Sheet 346U is constructed of aluminum oxide and comes in a range of grades and sizes to accommodate many different projects. The paper backing is durable for coarse sanding, yet flexible enough to be used on curved surfaces. Its cut-rate and durability make this an excellent choice for blending the joints of connecting pieces in wood- and metal-working.

3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
Dynabrade 79390 4-1/2" Dia. x 7/8" Center Hole, Z/A ,Type 27 Depressed Center Wheel, 10/box
3M 22970, Disc Holder Adapter 9, 5/8-11 External 3/8-24 Internal, 7000046093
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
Dynabrade 95544 Gear Grease, 2.5oz. Tube
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
ACS 1/2 in x 18 in Diamond Metal Bond Belt, 60M/250u
3M 34550, Cubitron II Net Sheet Roll, 80+, 80 mm x 10 m, 7100283781, 6 Rolls/Case
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 62663, Scotch-Weld General Purpose Retaining Compound RT09, Green, 250 mL Bottle, 7010367430, 2/case
3M 88892, PSA Cloth Disc 348D, 60 X-weight, 15 in x NH, Die 1500A, 7010360718 
